Old Fashioned Sponge Candy - cooking recipe

Ingredients

1 cup granulated sugar
1 tablespoon white vinegar
1 cup corn syrup
1 tablespoon baking soda

Preparation

line the bottom and sides of a 9x9\" square pan -- with aluminum foil -- butter foil and set aside.
combine sugar, vinegar and corn syrup in a heavy pan --
stir once over medium heat till sugar dissolves --
heat until mixture reaches the hard crack stage or 290*-310* on candy thermometer.
remove from heat, carefully stir in baking soda.mixture will foam quite high --
pour mixture into prepared pans, set aside at room temperature until firm --
invert pan to remove candy.
peel foil off and break candy into small pieces --
store in an airtight container at room temperature -- .